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Two killed in Iraq green zone

From NBC's Libby LeistThe State Department confirms that two U.S. citizens have died in Iraq this week from indirect fire by rocket and mortar attacks in the Green Zone.

The first person, a contractor for the US Army, died on Monday, March 24, and this afternoon, we have confirmation that another U.S. citizen has died from the latest round of fire.

The State Department says of this latest death "no further details, pending notification of next of kin."

*** UPDATE *** The Iraqi government has ordered a full (24 hours per day) curfew for Baghdad through Sunday. While curfews have been the norm over the past three years, this is the first curfew in Baghdad since mid-January.